Bug 1371749
| Summary: | virsh migrate --copy-storage-all genrates a qcow2v2 image on target even if qcow2v3 image is used on source | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Yang Yang <yanyang> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| Status: | CLOSED NOTABUG | QA Contact: | zhe peng <zpeng> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.3 | CC: | dyuan, dzheng, fjin, rbalakri, xuzhang, yafu, zpeng |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-04-25 08:48:36 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Now that I'm thinking about this, is this really a problem? I mean, with storage migration the whole backing chain is flattened, so different compat version is the least problem. Therefore I'm inclined to close this. Any objections? Okay. I'm closing this one. If somebody feel otherwise, please feel free to reopen and state why this matters. |
Description of problem: I have a running vm using qcow2v3 image on source host. I migrate vm with copy-storage-all flag. After migration, libvirt generates a qcow2v2 image on target host. Version-Release number of selected component (if applicable): on both source and target: libvirt-2.0.0-6.el7.x86_64 qemu-kvm-rhev-2.6.0-22.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. start vm with qcow2v3 image on source # qemu-img info /var/lib/libvirt/images/RHEL-7.3-latest.qcow2 image: /var/lib/libvirt/images/RHEL-7.3-latest.qcow2 file format: qcow2 virtual size: 5.0G (5368709120 bytes) disk size: 1.3G cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 <disk type='file' device='disk'> <driver name='qemu' type='qcow2' io='threads' ioeventfd='on' event_idx='off' detect_zeroes='on'/> <source file='/var/lib/libvirt/images/RHEL-7.3-latest.qcow2'/> <target dev='vda' bus='virtio'/> <boot order='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/> </disk> # virsh start vm-mig Domain vm-mig started 2. migrate vm with copy-storage-all flag # virsh migrate vm-mig qemu+ssh://hp-dl385g7-05.lab.eng.pek2.redhat.com/system --verbose --live --unsafe --copy-storage-all root.eng.pek2.redhat.com's password: Migration: [100 %] 3. check image on target # qemu-img info /var/lib/libvirt/images/RHEL-7.3-latest.qcow2 image: /var/lib/libvirt/images/RHEL-7.3-latest.qcow2 file format: qcow2 virtual size: 5.0G (5368709120 bytes) disk size: 5.0G cluster_size: 65536 Format specific information: compat: 0.10 refcount bits: 16 Actual result: virsh migrate --copy-storage-all genrates a qcow2v2 image on target even if qcow2v3 image is used on source Expected result: Images on both source and target should keep identical Additional info: Addressed libvirtd.log on target host: 2016-08-30 04:43:03.597+0000: 1744: debug : qemuMigrationPrecreateStorage:1687 : Looking up disk target 'vda' (capacity=5368709120) 2016-08-30 04:43:03.598+0000: 1744: debug : qemuMigrationPrecreateStorage:1712 : Proceeding with disk source /var/lib/libvirt/images/RHEL-7.3-latest.qcow2 2016-08-30 04:43:03.598+0000: 1744: debug : qemuMigrationPrecreateDisk:1553 : Precreate disk type=file 2016-08-30 04:43:03.598+0000: 1744: info : virObjectNew:202 : OBJECT_NEW: obj=0x7f7be000e420 classname=virStoragePool 2016-08-30 04:43:03.598+0000: 1744: info : virObjectRef:296 : OBJECT_REF: obj=0x7f7bdc001870 2016-08-30 04:43:03.598+0000: 1744: debug : virStorageVolLookupByName:1293 : pool=0x7f7be000e420, name=RHEL-7.3-latest.qcow2 2016-08-30 04:43:03.598+0000: 1744: debug : storageVolLookupByName:1528 : Storage volume not found: no storage vol with matching name 'RHEL-7.3-latest.qcow2' 2016-08-30 04:43:03.598+0000: 1744: debug : virStorageVolCreateXML:1466 : pool=0x7f7be000e420, xmlDesc=<volume> <name>RHEL-7.3-latest.qcow2</name> <capacity>5368709120</capacity> <target> <format type='qcow2'/> </target> </volume> , flags=1 2016-08-30 04:43:03.624+0000: 1744: debug : virCommandRunAsync:2429 : About to run /usr/local/bin/qemu-img create -f qcow2 -o preallocation=metadata,compat=0.10 /var/lib/libvirt/images/RHEL-7.3-latest.qcow2 5242880K 2016-08-30 04:43:03.626+0000: 1744: debug : virFileClose:102 : Closed fd 26 2016-08-30 04:43:03.626+0000: 1744: debug : virFileClose:102 : Closed fd 29 2016-08-30 04:43:03.627+0000: 1744: debug : virFileClose:102 : Closed fd 31 2016-08-30 04:43:03.627+0000: 1744: debug : virCommandRunAsync:2432 : Command result 0, with PID 14872 2016-08-30 04:43:03.760+0000: 1744: debug : virCommandRun:2280 : Result status 0, stdout: 'Formatting '/var/lib/libvirt/images/RHEL-7.3-latest.qcow2', fmt=qcow2 size=5368709120 compat=0.10 encryption=off cluster_size=65536 preallocation=metadata lazy_refcounts=off refcount_bits=16 ' stderr: '2016-08-30 04:43:03.633+0000: 14872: debug : virFileClose:102 : Closed fd 29 2016-08-30 04:43:03.633+0000: 14872: debug : virFileClose:102 : Closed fd 31 2016-08-30 04:43:03.633+0000: 14872: debug : virFileClose:102 : Closed fd 26 ' 2016-08-30 04:43:03.760+0000: 1744: debug : virFileClose:102 : Closed fd 27 2016-08-30 04:43:03.760+0000: 1744: debug : virFileClose:102 : Closed fd 30 2016-08-30 04:43:03.762+0000: 1744: debug : virStorageFileGetMetadataInternal:937 : path=/var/lib/libvirt/images/RHEL-7.3-latest.qcow2, buf=0x7f7be0017ac0, len=33280, meta->format=14 2016-08-30 04:43:03.762+0000: 1744: info : storageVolCreateXML:1996 : Creating volume 'RHEL-7.3-latest.qcow2' in storage pool 'default' 2016-08-30 04:43:03.762+0000: 1744: info : virObjectUnref:259 : OBJECT_UNREF: obj=0x7f7be00177c0 2016-08-30 04:43:03.762+0000: 1744: info : virObjectUnref:261 : OBJECT_DISPOSE: obj=0x7f7be00177c0 2016-08-30 04:43:03.762+0000: 1744: debug : virStorageVolDispose:589 : release vol 0x7f7be00177c0 RHEL-7.3-latest.qcow2